Is it a function or non function?

Which equation represents a line that is parallel to the line whose equation is 3x-2y=7( show all work)

Can someone tell me if this is perpendicular? !

60 musicians applied for a job at a music school. 14 of the musicians play both guitar and drums, 28 play drums, 18 play the guitar. what is the probability that the applicant who gets the job plays drums or guitar?